SEGuru Does talk a lot of crock some times as anybody doing search engines does. However if you don't have 100 hours a week to continually monitor whats going on in the SE world sites like his sure cut thru all the crap and provide you with the information you need now. I agree fully with him that building your own page rank domains is must at the moment and it's just as easy as finding expired's in my personal opion. I have two full servers ( 512 domains ) of ex PR7 domains that I brought during the expired frenzy
) all Pr0 now
About 4 years ago I attended a panel he was on in Miami, I thought it was shit, did not pick up nothing new, except for this Dmoz thing he was going on about, he kept saying, get listed at Dmoz, become an editor at Dmoz put as many sites as you can at Dmoz. So I built some domains and applyed for a couple of editorships soley on his advise. Within 3 months I had increased my profit by $50k a month.
While replication of this now would be hard as Dmoz is not the force it used to be, it does show how you only need to pick up on one small bit of information and you can make a lot of money.
Buying PR is common at present and what price you pay will depend on how much you can make, I would advise that you don't buy Pr for any domains that you can't afford to lose. Look for domains with genuine Pr and more than 200 incoiming links from seperate hosts.
Personally I think its better to build a site and get it to a Pr4 which is easy and then use this Pr to deep link your other domains. Keep away from really competive keywords and use the mulitude of Pr3 internal pages you can make for your terms,
if your redirecting SE traffic then I would be very very careful at present cos there on your/my ass for it.